HELP ME????

We've been trying for 9 months now, my period had been later almost 2 weeks last couple months. I was suppose to start last saturday and never did. Yesterday evening I wiped and had very very light pink but it quit, today it did it again and stopped! Maybe implantation bleeding? Only other things going on is on and off heartburn which I've never had before in my life and I'm 26 and I kinda eat all day long. Please if anyone can tell me anything it would help.